bargraph.c

CODE for embedded C ,hand coding version

/*-------------------------------------------------------------------*-
 Bargraph.C(v1.00)
 ----------------------------------------------------------------------
 Simple bargraph library
 -*------------------------------------------------------------------*/

 #include "Main.H"
 #include "Port.H"

 #include "Bargraph.H"
 //--------------------- PUBLIC VARAIBALE DECLARATIONS ----------------
 // The data to be displayed 
 tBargraph Data_G ;
 //--------------------- Private constants ----------------------------
 
 #define BARGRAPH_ON (1)
 #define BARGRAPH_OFF (0)

 //---------------------Private variables ------------------------------
 //These variables store the thresholds
 //Used to update the display 
 static tBargraph M9_1_G;
 static tBargraph M9_2_G;
 static tBargraph M9_3_G;
 static tBargraph M9_4_G;
 static tBargraph M9_5_G;
 static tBargraph M9_6_G;
 static tBargraph M9_7_G;
 static tBargraph M9_8_G;
 
 /*-------------------------------------------------------------------*-
 BARGRAPH_Init()
 Prepare for the bargraph display 
 -*--------------------------------------------------------------------*/

 void BARGRAPH_Init(void){
  Pin0 = BARGRAPH_OFF;
  Pin1 = BARGRAPH_OFF;
  Pin2 = BARGRAPH_OFF;
  Pin3 = BARGRAPH_OFF;
  Pin4 = BARGRAPH_OFF;
  Pin5 = BARGRAPH_OFF;
  Pin6 = BARGRAPH_OFF;
  Pin7 = BARGRAPH_OFF;

  //Use a linear scale to display data
  //Remember: *9* possible output states 
  //-do all calculations ONCE 
  M9_1_G = (BARGRAPH_MAX - BARGRAPH_MIN)/9;
  M9_2_G =  M9_1_G * 2 ;
  M9_3_G =  M9_1_G * 2 ;
  M9_4_G =  M9_1_G * 2 ;
  M9_5_G =  M9_1_G * 2 ;
  M9_6_G =  M9_1_G * 2 ;
  M9_7_G =  M9_1_G * 2 ;
  M9_8_G =  M9_1_G * 2 ;
  
}

/*-------------------------------------------------------------------*-
 BARGRAPH_Update()
 Update the bargraph display
 -*-----------------------------------------------------------------*/

 void BARGRAPH_Update(void){
  tBargraph Data = Data_G - BARGRAPH_MIN;

  Pin0 = ((Data >= M9_1_G) == BARGRAPH_ON);
  Pin1 = ((Data >= M9_2_G) == BARGRAPH_ON);
  Pin2 = ((Data >= M9_3_G) == BARGRAPH_ON);
  Pin3 = ((Data >= M9_4_G) == BARGRAPH_ON);
  Pin4 = ((Data >= M9_5_G) == BARGRAPH_ON);
  Pin5 = ((Data >= M9_6_G) == BARGRAPH_ON);
  Pin6 = ((Data >= M9_7_G) == BARGRAPH_ON);
  Pin7 = ((Data >= M9_8_G) == BARGRAPH_ON);
  
}
 

/*-------------------------------------------------------------------*-
 ---------------END OF FILE -------------------------------------------
 -*--------------------------------------------------------------------*/